If you won't be able to disable SIP ALG on your router you can fill
$avp(received) manually before calling save():
$avp(received) = "sip:" + $si + ":" + $sp + ";transport=" + $proto;
In this case all user location records will have the "received" attribut
even if a UA isn't behind NAT, but I don't see any problems with that.
On 08/14/2013 11:51 AM, Roberto Fichera wrote:
On 08/14/2013 11:31 AM, Daniel-Constantin Mierla wrote:
Hi,
Hello,
On 8/14/13 11:26 AM, Roberto Fichera wrote:
On 08/14/2013 11:20 AM, Daniel-Constantin Mierla wrote:
Hi,
Hello,
On 8/14/13 11:16 AM, Roberto Fichera wrote:
On 08/14/2013 10:19 AM, Daniel-Constantin Mierla wrote:
Hi,
Hello,
as you can see in the REGISTER, the phone give a public IP where it can be
contacted and kamailio tries to deliver to
that address sip:528@94.94.X.X:1274;transport=TCP
REGISTER comes from another port, but that is allowed in SIP.
Yep! That's the problem
You should disable stun in the client and let the server care of nat traversal.
As already said all client doesn't use any stun-
then how they discover the public IP address if they are behind NAT? Or did I
misunderstand that they are behind NAT?
Yes! They are behind NAT! Shouldn't kamailio detect such behaviour so it will
change the contact header and the other
fields accordingly using the nat_fix_XXXX functions?
detection of whether a device is behind nat is done based on comparing source
IP of the packet with the IP addresses
in the SIP message. It is no other way from application point of view.
If you look at the trace, the REGISTER has only public IP addresses, no private
address. Also, the Via header is
perfectly matching the the source IP and port of the packet.
Mhhh!!! That's true!
Therefore, if the device is behind a nat in a private network, how does it
discover the public IP or the NAT router?
Is the nat router running a SIP ALG? Can you get the SIP trace on the device
itself?
Good question! It's a cisco 877 but the conf doesn't have any kind of SIP
related configuration. Does it handle
transparently the SIP traffic?
Cisco IOS Software, C870 Software (C870-ADVIPSERVICESK9-M), Version 12.4(15)T5,
RELEASE SOFTWARE (fc4)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by Cisco Systems, Inc.
Compiled Thu 01-May-08 02:31 by prod_rel_team
Ok! There are two commands to disable it, since it's enabled by default!!!
no ip nat service sip tcp port 5060
no ip nat service sip udp port 5060
I'll test it right now!
Cheers,
Daniel
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